<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model.trim="name"/>
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="age"/>
    </div>
    <div>
      <span>性别:</span>
      <select v-model="gender">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="onSave">添加/修改</button>
    </div>
    <div>
      <table
        border="1"
        cellpadding="10"
        cellspacing="0"
      >
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item,index) in list" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.gender }}</td>
          <td>
            <button @click="delFn(index)">删除</button>
            <button @click="acquireFn(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
 data () {
  return {
   editIndex: null,
   addOrGai:false,
   name:'',
   age:0,
   gender:'',
   list:[
    {
     name:'Tom',
     age:'19',
     gender:'男'
    },
     {
     name:'Jone',
     age:'21',
     gender:'女'
    }
   ]
  }
 },
 methods: {
  onSave() {
   if(this.addOrGai) {
    this.list[this.editIndex].name = this.name
    this.list[this.editIndex].age = this.age
    this.list[this.editIndex].gender = this.gender
    this.name = this.gender = ''
    this.age = 0
    this.addOrGai = false
   }else {
    this.addFn()
   }
  },
  addFn() {
   if(!this.name || !this.age || !this.gender) {
    return alert('输入信息不能为空！')
   }
   let id = this.list[this.list.length - 1].id + 1
   let obj = {
    id,
    name:this.name,
    age:this.age,
    gender:this.gender
   }
   this.list.push(obj)
   this.name = this.gender = ''
   this.age = 0
  },
  acquireFn(index) {
   this.editIndex = index
   this.addOrGai = true
   this.name = this.list[index].name
   this.age = this.list[index].age 
   this.gender = this.list[index].gender 
  },
  delFn(i) {
   this.list.splice(i,1)
  }
 }
}
</script>
